Valve for steep-tanks.



No. 850;.215. PATENTED APR'. 1a. 1907. J. F. DORVNPBLD. VALVE PoR sznEBP TANKS. APPLICATION FILED 00T. 7. 19.05.

Elm "n n UNITED STATES PATENT onirica JOHN F. DORN'FELI), OF CHICAGO, ILLINOIS.

VALVE FOR STEEFTANKSl Specification of Letters Patent.

Patented April 16, 1907.

Application filed October '7, 1905. Serial No. 281.854.

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Be it known that I, JOHN F. l.)o1tNFnLn, a citizen of thev United cago, in the county of Oook and State of Illinois7 have invented certain new and useful I Improvements in Valves for Steep-'.lai'iks, ol`

a discharge-opening is arranged in the bot- ,I

tom thereof. As will be readily understood,

the weight of the water and grain filling the 1 tank exerts a very considerable pressure i upon the valve closing the discharge-opening, and if said valve be not tightlyA seated leakage will occur. In valves for steeptanks as heretofore constructed the valveclosure has been connected with the valvecasing in such a way'that when the closure was tightly seated against the packing-ring surrounding the discharge-opening said ring was subjected to unequal pressure upon its different portions, quickly resulting in leakage and necessitating frequent repairs.

The object of this invention is theproduction of an improved valve for the-grai'n-discharge opening of steep-tanks which shall overcome the objections hereinbe'fore alluded to and which shall embody the other and further improvements hereinafter set forth.

In the accompanying drawings, Figure 1 is a vertical central section through the lower end of a stee -tank provided with a valve embodying the features of my invention. Fi 2 is a horizontal section through said vaIve on dotted line 2 2 of Fig. 1. Fig.v 3 is an enlar ed view of the valve proper, illustrating the same as slightly opened. Fig. 4 is a fragmental detail view showing the connection between the valve-closure and the closing-screw.

In the drawings, 1 refers to the conical lower end of a steep-tank, 2 being the outletopening for said tank. Riveted or otherwise secured to the lower end of said tank is a valve-casin 3, comprising chambers 4 and 5, separate by a partition 6. An opening 7 in the valve-casing communicates between the interior of the steep-tank and the chamber 4, and an opening 8, alined with the opening 7, connects the chambers 4L and 5. The chamber 5 is Open at its lower side to permit the free passage of the steeped grain through the valve-casing 3. In one side of the valve-` casing 3 is a water-inlet and outlet opening States, residing at Ohi- 9, by means of which communication is established between the chamber 4L and a 'water-pipe 10, secured in any suitable manner to the valve-casing 3. A cylindrical screen 1 l, of perforated metal, is secured at its ends to the walls of the opi-inings 7 and 8, said l screen permitting the passage of water from the pipe 10 into the steep-tank and from said i escape of grain into -the chamber 41 or the pipe 10. The opening 8 is arranged to be closed by means of a valve-closure 12, said. closure seating against a packing-ring 13, of rubber or other suitable material, lying in a 'i groove 14 in the under slide of the partition The closure 12 is circular in outline and at one point has a hinge connection with the valve-casing. In order y that said valve 'when moved upon its hinge into contact with the yielding packing-ring 13 shall not press harder against .said ring at its hinge connection than at any other point, I have i provided a hinge connection constructed as follows.: Two links 15, formed integral with l or iixed rigidly to a-sleeve portion 16, are l pivotally mounted in the valve-casing 3 by means of a bolt or pivot-pin 17, extending i through said closure. The outer ends of said l links are pivotally connected with the valveclosure 1.2 by means of a pin 1S. It will thus be seen that the closure 12 is free to have an upward movement at its hinge side, as well as at every other point, and therefore that the packing-ring 13 will not be pressed more tightly at one point than at another.

The means for moving the valve-closure 12 into its closed position is located at one side of the chamber 5 and comprises a screw 19, lying within an interiorly-screw-threaded tubular stem 20, formed integral with the valve-casing 3. Upon the under side of the valve-closure 12 are formed radial strengthl ening-ribs 21, the inner ends of which are of greater heightthan the outer ends. One of said ribs has formed in its lower edge a groove 22, extending from a point ne'ar the hinge connection of said valve-closure to the lowest point of said rib. The inner end 23 of the screw 19 is tapering and is adapted to lie within the groove 22. Upon theouter end of the screw 19 is secured a hand-wheel 24k for rotating the screw. As will be seen, a movement of the screw 19 in one direction will force the valve-closure 12 upward tol close the opening'S, and a movement of the screw in the opposite direction will permit tank into the pipe 10, but preventing the IIO 850,215 said valve-closure to drop into a substanto the lower end of a steep-tank7 said casin tially vertical position against the inner wall havingl two chambers therein separated by of the chai'nber. I a partition, said partition having` a valve- In use the valve-closure l2, having rst I opening` tl'ierein, the upper chamber com- 6o been. placed in the closed position., the grain niiinicatiiig with the interior of the steep is placed in the steep-tank and the water for i tank, an( the lower chamber bein@ open at steeping the grain is forced into the tank its lower side a valveclosure in said lower through the pipe 10, the chamber 4, and the chamber,l a link for connecting said closure screen 1.1. After the grain has been subat one vside with said valve-casing said cloio jected to the steeping operation for a suitsure being capable of a considerable amount able length ot time the water is withdrawn of movement with relation to said link and from the tank through the pipe 10. The meanslocated at one side of saidlower chainsteeped grain is then discl'iarged from the ber and withdrawable from said chamber tank by rotatimy the screw 19 in the direction for pivotally moving said valve-closure with 7 0 15 to permit the valve-elosure 12 to be opened relation to said link.

)y its own weight and the pressure of the 4. In a valve for steep-tanks, in combinagrain. The iiow ol' 01rain lroiii. the steeption, a valve-casing adapted to be secured tank is not obstructed by the valve-closure Lo the lower end of a steep-tank, said casin or t e means for operatinof said closure iaviiig two chambers therein separated bya 2o en inits closed posit-ion, the closure 19 horizontal partition, said pai tition havin a is supported beneath substantially its center valve-opening therein, the 4upper one of said y the screw 19 and bears with a uniform chambers communicating 'with the interior pressure against all parts of the packingof the steep-tank, `a packing-ring located ring 13. upon .the under side of said partition and 8o 25 I claim as my invention` surrounding said valve-openino; a closure l. In a valve for steep-tanks, in ccmbinaa aptedto be seated on said valve-ring and tion, a valve-casing having a valve-opening having' a link connection with said valve therein; a closure for said opening, a link casing, said closure being arranged to dro connecting one side of said closure with said i by gravity into. a substantially vertical y o- 3o casing, said closure bein@ capable of a conl sition against one wall of the lower chamber,l si erable amount of movement with relation Vand a screw extending into said lower chamto said link and a member mounted at one ber in a line at right angles 'with the axis of si e of said valve-easing and arran ed to said valve-opening and arranged to force ave a movement in a line at right angles said closure against said packing-ring, the 9o 3 5 with the axis of said valve-opening, the ininner end of said screw being witidrawable ner end oi sai member being adapted to en` j from said lower chamber. gage the rear side of said closure for moving 5 n a valve for steep-tanks in combinasaid closure with relation to said link. tion, a valve-casing adapted to e secured 2. n a valve for steep-tanks, in combina` to the ower end of a steep-tank, said casing 4o tion, avalve-casing having an opening thereiaving a lower chamber therein; a cylinin a closure for said opening; a link connectdrical screen connecting the interior of said ing one side of said closure with said casin t. steep-tank with said lower chamber; an u sai closure being capable of a considerable per c am er in said valve-casing surround-l amount of movement with relation to its ing said screen and communicating with a 'loo 45 lin said casing having at one side an intesource of waterjsupply; a closure having a riorly-screw-threaded' tubular stem; a screw link connection at one side with said valveengaging the screw-threads in said tubular f casing for closing communication between stein and extending in a line substantially at the steep-tank and said lower chamber; and aright angle with the axis ofsaid valve-openmeans located at one side of said lower 5o ing, the inner end of said screw being ar- -chamber and withdrawable from said chamranged to bear against the rear side of said ber for pivotally moving said valve-closure valve-closure for moving said closure with upon its link connection. relation to said link and means for rotating JOHN F. DORN FELD. said screw` l Witnesses: 55 3 In a valve for steep-tanks, in combina` L. L. MILLER,

easing adapted to be secured GEORGE L. CHINDAHL. 

